Ebenezee blackman



(Nn Model.)

B. BLAOKMAN.

SUSPENSION DEVICE FOR LAMPS, 8w.

Patented Apr. 27, 1886.

l :IIIIIIIII/fllli I VIIIIIIII/IIII NITED STATES PATENT OFFICE.

EBENEZER BLAOKMAN, OF BROOKLYN, ASSIGNOR TO CHARLES J PETERSEN, OF PORT CHESTER, NEIV YORK.

SUSPENSION DEVICE FOR LAMPS, 84o.

@PECIFICATION forming part of Letters Patent No. 340,969, dated April 2'7, 1886.

Application filed September 18, 1885. Serial No. 177,426.

To aZZ whom it may concern.-

Be it known that I, Ennnnznn BLAOKMAN, of Brooklyn, in Kings county, and the State of New York, have invented a certain new and useful Improvement in suspending Devices for Lamps, &c., of which the following is a specification.

The object of my improvement is to produce a suspending device adapted for use with a lamp or like article or extensible part, and to make the suspension device simple in construction, and capable of holding the suspended article or extensible part positively in any position into which it may be adjusted.

In the accompanying drawings, Figure l is a side view of a suspending device embodying my improvement and a lamp suspended thereby. Fig. 2 is a Vertical section of the suspending device on a larger scale. Fig. 3 is a top view of the suspending device on the same scale as Fig. 2. Fig. 4 is a side View of a suspending device embodying the improvement in a modified form. Fig. 5 is an edge view of the suspending device shown in Fig. 4.

Similar letters of reference designate corresponding parts in all the figures.

Referring first to the example of my improvement shown in Figs. 1, 2, and 3, A designates a drum mounted on a vertically-arranged arbor, B, so as to be free to rotate freely thereon. \Vithin this drum a convolute spring, 0, is arranged. This spring is fastened at one end to the arbor and at the other end to the drum. It resists the rotation of the drum in one direction, but effects the rotation of the drum in the other direction when permitted so to do. On the arbor B a frame, D, is secured. This frame is not intended to have any movement independently of the arbor;

E designates cords, chains, or like devices wound upon the exterior of the drum, between flanges a, with which the latter is provided, and passing from the latter over guides, preferably consisting of rollers F, arranged upon the frame D, and descending thence to the article to be suspended. In the present instance the cords, chains, or like devices are attached to the frame of a lamp, G.

The weight of the suspended article tends to rotate the drum in the direction to unwind the cords, chains, or like devices E. Motion (No model.)

of the drum in this direction will be resisted by the spring 0. lVhen the cords, chains, or like devices E are relieved from the weight of the suspended article, the'spring C will, if permitted, rotate the drum in the direction to wind up the cords, chains, or like devices, and aid, to the extent of the force it is capable of exerting, in raising the suspended article.

The drum A has a cord, chain, or like device, H, wound upon it, in addition to the cords, chains, or like devices E; but, as here shown, above the uppermost flange, a, and below a flange, a, with which the drum is provided. The flange a of the drum is serrated, toothed, or notched at the periphery.

I designates a stop, lock, or brake for securing the drum in different positions to which it may be rotarily adjusted. I have shown this stop, lock, or brake as made in the form of a lever fulcrumed between the ends to the frame D, provided at one end with teeth adapted to straddle the frame and engage with the notches of the flange a of the drum, and furnished at the other end, beyond the frame D, with a guide, preferably consisting of an anti- -friction roller, (1, over which the cord, chain, or like device H passes.

The cord, chain, or like device H is wound upon and unwound from the drum simultaneously with the cords, chains, or like devices E. The end of the cord, chain, or like device .H is shown as fastened to the frame of the lamp G by passing it through the said frame and providing it above and below the part of the frame through which it passes with stops it h".

The cord, chain, or like device H may be pulled down, so as to shift the stop, lock, or brake I, to cause it to become disengaged from the drum A. It must of course be understood that the resistanee of the stop, lock, or brake to movement is less than that which the drum offers to rotation in the direction to unwind the eords, chains, or like devices, and hence that the cord, chain, or like device H may, when .pulled, operate the stop, lock, or brake without producing any effect on the drum. lVhile the drum is thus freed from the stop, lock, or brake, the drum may rotate in either direction, and consequently the sus pended article can be raised and lowered.

Whenever the cord, chain, or like device H is released, he stop, lock, or brake will automatically re-engage with the the drum A and secure it. I have shown a spring, J, arranged between the frame D and the stop, lock, or brake, to cause the latter to re-engage with the drum.

This suspending device may be hung ona hook or other support, it being provided for this purpose with a loop or eye, K, which has a swiveling connection with the arbor B.

In Figs. 4 and 5 I have shown a different arrangement of parts. A frame, 1), is provided with an eye, K. The arbor B is supported horizontally in the frame I). The arbor isv nona'otary, the drum A is loosely mounted upon it, and a convolute spring is arranged within the drum and fastened to the drum and arbor. The stop, lock, or brake I is shown as made in the form of a lever fulcruined to the frame D, and actuated by a spring, J, to engage with the serrated, toothed, or notched flange a of the drum. A cord, chain, or like device, E, passes around the drum and descends over a guide, F, to an article to be suspended, or to the extensible part of an extension-chandelier, the frame D in the latter case being affixed to the stationary part of the chandelier. A cord, chain, or like device, H, is wound upon the drum and passes thence around a guide, (I, and down around the guide 13 to the suspended article or extensible part.

It will be seen that by my improvement I provide for applying a stop, lock, or brake by operating a cord, chain, or like device from the suspended article or part, and yet have the slack of the cord, chain, or like device taken up at all times.

XVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In a suspending device, the combination of ,an arbor, a drum mounted on the same, a spring connected to the arbor and drum, a cord, chain, or like device wound upon the drum and depending therefrom to support any desired article or part, a stop, lock, or brake for securing the drum, another cord, chain, or like device wound upon the drum and passing thence to the stop, lock, or brake and depend- U ing from the latter, substantially as specified. 2. In a suspending device, the combination of the arbor B, drum A, springO, frame D, a cord, chain, or like device, E, a stop, lock, or brake, as I, and a cord, chain, or like device, H, wound upon the drum, passing thence to the stop, lock, or brake and depending from thelatter, substantially as specified.

- EBENEZER BLAOKMAN. Vitnesses:

EDWIN H. BROWN,

DANIEL H. DRISGOLL. 

